Display screen or a portion thereof with graphical user interface



The sole FIGURE is a front view of a display screen or a portion thereof with graphical user interface, showing my new design.

The broken lines represent a portion of a display screen and form no part of the claimed design.

The inventor contemplates that other embodiments of his/her design may include any part, portion, element, or combination of elements of the claimed design. 

CLAIM The ornamental design for a display screen or a portion thereof with graphical user interface, as shown and described. 